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info InefficientStringBuffering (PMD)

Avoid concatenating nonliterals in a StringBuffer constructor or append().

Avoid concatenating non literals in a StringBuffer constructor or append().

public class Foo {
 void bar() {
  // Avoid this
  StringBuffer sb=new StringBuffer("tmp = "+System.getProperty("java.io.tmpdir"));
  // use instead something like this
  StringBuffer sb = new StringBuffer("tmp = ");
  sb.append(System.getProperty("java.io.tmpdir"));
 }
}

    

Additional info can be found at this http://pmd.sourceforge.net/rules/strings.html#InefficientStringBuffering site.